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Diode is one of basic electronic components. It has a nonreciprocal currentresponse, associated with a broken space/time reversal symmetry. Here wedemonstrate prototypes of superconducting diodes operational at zero magneticfield. They are based on conventional niobium planar Josephson junctions, inwhich space/time symmetry is broken by a combination of self-field effect fromnonuniform bias and stray fields from a trapped Abrikosov vortex. Wedemonstrate that nonreciprocity of critical current in such diodes can reach anorder of magnitude and rectification efficiency can exceed 70$\%$. Furthermore,we can easily change the diode polarity and switch nonreciprocity on/off bychanging bias configuration and by trapping/removing a vortex. This facilitatesmemory functionality. We argue that such diode-with-memory can be used for afuture generation of in-memory superconducting computers.

Demonstration of a superconducting diode-with-memory, operational at zero magnetic field with switchable nonreciprocity